Clean up compiler warning/removed unused code

Clean up compiler warning/removed unused code

ocstack.c:
Removed the verifyUriQueryLength() function. This function
is not used anywhere in the code.  The code may be valid,
however, if it is not used its not being maintained.
[-Wunused-function]

Change-Id: Ifa9b0a6a4b22416eb91b67b4476b544c70ff20c8
Signed-off-by: George Nash <george.nash@intel.com>
Reviewed-on: https://gerrit.iotivity.org/gerrit/8421
Reviewed-by: David Antler <david.a.antler@intel.com>
Tested-by: jenkins-iotivity <jenkins-iotivity@opendaylight.org>
Reviewed-by: Jon A. Cruz <jon@joncruz.org>